package com.atguigu.lease.web.app.custom.interceptor;

import com.atguigu.lease.common.context.LoginUser;
import com.atguigu.lease.common.context.LoginUserContext;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;

/**
 * ClassName: AuthenticationInterceptor
 * Package: com.atguigu.lease.web.app.custom.interceptor
 * Description:
 *
 * @Author 咚咚小圆帽
 * @Create 2025/3/4 14:29
 * @Version 1.0
 */
@Component
public class AuthenticationInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader("access_token");
        //解析token
        if (!StringUtils.hasText(token)) {
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_AUTH);
        }
        Claims claims = JwtUtil.parseToken(token);
        Long userId = claims.get("userId", Long.class);
        String username = claims.get("username", String.class);
        LoginUser loginUser = new LoginUser(userId, username);
        LoginUserContext.setLoginUser(loginUser);
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        LoginUserContext.clear();
    }

}

